Auxiliary feeding device of concealed sewing machine
By designing an auxiliary feeding device suitable for blind stitch machines, the problem of insufficient adaptability of traditional blind stitch machines to fabrics of different thicknesses is solved, achieving stable feeding and adjustable pressure to meet the needs of fabrics of different thicknesses.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2026-03-24
AI Technical Summary
Traditional blind stitch machines have insufficient adaptability to fabrics of different thicknesses, leading to interlayer slippage, wrinkles, or skewed stitches. Furthermore, improper pressure control on ultra-thin fabrics may cause fabric deformation.
An auxiliary feeding device for a blind stitch sewing machine was designed, comprising an upper auxiliary wheel assembly and a lower auxiliary wheel assembly. By adjusting the screw and spring, the height and pressure of the pressure roller can be adjusted to meet the feeding needs of fabrics of different thicknesses.
It achieves stable feeding of fabrics of different thicknesses, avoids interlayer slippage and fabric deformation, and improves the applicability and accuracy of feeding.
Smart Images
Figure CN224031228U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to sewing equipment technical field, more specifically, it relates to a hidden seam machine auxiliary feeding device. BACKGROUND
[0002] The hidden seam machine is a special sewing equipment used in the field of clothing, home textiles and the like, and its feature is to realize traceless sewing of the front of the fabric through hidden stitches. The feeding mode of the traditional hidden seam machine mainly relies on the lower feeding wheel or gear to push the fabric, and the control force on the upper fabric is insufficient, which can easily lead to different synchronization of multi-layer fabric (such as thick fabric or elastic fabric) conveying, and can cause interlayer slip, wrinkle or stitch skew and the like. Or for ultra-thin fabric (such as silk), the pressure is too large, which can cause fabric deformation or indentation. Based on the above problems, the application provides a hidden seam machine auxiliary feeding device which can feed fabrics of different thicknesses and adjust the pressure on the fabric. SUMMARY
[0003] In view of the deficiencies in the prior art, the utility model aims to provide a hidden seam machine auxiliary feeding device which can feed fabrics of different thicknesses and adjust the pressure on the fabric.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a hidden seam machine auxiliary feeding device, including upper auxiliary wheel assembly arranged on the rack, and lower auxiliary wheel assembly arranged in the workbench, the upper auxiliary wheel assembly includes auxiliary seat provided with pressure roller, and adjusting part for adjusting the up-down displacement of the auxiliary seat, one side of the auxiliary seat is provided with slide rail and positioning pin, the rack is provided with slide groove matched with the slide rail, and the positioning pin is arranged in the movable slot, the positioning pin can move up and down in the movable slot, the adjusting part includes adjusting seat fixed on the rack, and adjusting screw threadedly matched with the adjusting seat, the bottom of the adjusting screw is rotatably matched with the guide column, the guide column extends to the outside of the adjusting seat and is slidably matched in the auxiliary seat, the guide column is provided with a spring, and the tail end of the spring abuts against the auxiliary seat.
[0005] The utility model is further provided: motor is arranged in the auxiliary seat, belt pulley one is arranged at the output end of the motor, the pressure roller is arranged with the transmission shaft, the other end of the transmission shaft is provided with belt pulley two, and the belt pulley one and the belt pulley two are provided with a belt ring.
[0006] The utility model is further provided: the lower auxiliary wheel assembly includes driving roller part driven by the motor to rotate in the circumferential direction, and the cylinder driving the driving roller part to move up and down.
[0007] By adopting the technical scheme, the feeding channel is formed between the upper auxiliary wheel assembly and the lower auxiliary wheel assembly, and the automatic feeding function is achieved, the height of the upper auxiliary wheel assembly and the pressure on the cloth can be adjusted through the operation of the adjusting screw rod, the feeding process of cloth with different thicknesses is suitable, the application range is wide, and the practicality is high. BRIEF DESCRIPTION OF DRAWINGS
[0008] Fig. 1 It is a structure schematic view of the utility model;
[0009] Fig. 2 It is a structure exploded view of the upper auxiliary wheel assembly;
[0010] Fig. 3 It is a partial structure schematic view of the utility model;
[0011] Fig. 4 It is a partial structure sectional view of the utility model.
[0012] 1, the upper auxiliary wheel assembly; 10, the auxiliary seat; 11, the pressure roller; 12, the adjusting part; 120, the motor; 121, the belt pulley one; 122, the belt ring; 123, the belt pulley two; 13, the slide rail; 14, the positioning pin; 15, the threaded groove; 16, the adjusting screw rod; 17, the guide column; 18, the spring; 2, the lower auxiliary wheel assembly; 20, the driving roller part; 21, the air cylinder; 3, the rack; 30, the sliding groove; 31, the movable slot; 32, the adjusting seat; 4, the workbench. DETAILED DESCRIPTION
[0013] REFERENCE Figs. 1 to 4 The utility model embodiment is further explained.
[0014] A kind of auxiliary feeding device of flatlock machine, including upper auxiliary wheel assembly 1 being located on rack 3, and lower auxiliary wheel assembly 2 being located in workbench 4, upper auxiliary wheel assembly 1 includes the auxiliary seat 10 being equipped with pressure roller 11, and adjusting part 12 for adjusting the up-down displacement of auxiliary seat 10, one side of the auxiliary seat 10 is equipped with slide rail 13 and positioning pin 14, the rack 3 is equipped with sliding groove 30 matched with slide rail 13 and movable slot 31 for positioning pin 14, the positioning pin 14 is located in movable slot 31 and can be displaced up and down, the adjusting part 12 includes adjusting seat 32 fixed on the rack 3, and adjusting screw rod 16 inserted in the threaded cooperation of adjusting seat 32, the bottom of the adjusting screw rod 16 is rotatably matched with guide column 17, the guide column 17 extends to adjusting seat 32 outside, and is inserted in auxiliary seat 10 and is slidably matched, the guide column 17 is equipped with spring 18, and the tail end of the spring 18 is in abutment with auxiliary seat 10.
[0015] The auxiliary seat 10 is provided with a motor 120, a belt pulley one 121 is arranged at the output end of the motor 120, a transmission shaft is arranged in the pressure roller 11, a belt pulley two 123 is arranged at the other end of the transmission shaft, and a belt ring 122 is arranged between the belt pulley one 121 and the belt pulley two 123.
[0016] Working principle: in the working process, the pressure roller 11 of the upper auxiliary wheel assembly 1 and the driving roller part 20 of the lower auxiliary wheel assembly 2 form a feeding channel, when the thickness of the cloth is not uniform, the pressure on the cloth needs to be adjusted, the adjusting screw 16 is screwed, the adjusting seat 32 is provided with a threaded groove 15 matched with the adjusting screw 16, when the adjusting screw 16 is screwed into the threaded groove 15, the adjusting screw 16 moves towards the auxiliary seat 10, the guide column 17 moves downwards, the spring 18 is in a contracted state under the pressure between the guide column 17 and the auxiliary seat 10, the adjustable range of the spring 18 is small and the elasticity is weak. When the adjusting screw 16 is screwed upwards towards the end of the threaded groove 15, the guide column 17 moves upwards with the adjusting screw 16, the spring 18 is in a relaxed state, the adjustable range of the spring 18 is large and the elasticity is good. When the pressure roller 11 presses the cloth, the pressure roller 11 moves upwards after being pressed, the spring 18 provides different upward displacement spaces for the auxiliary seat 10, the different states of the spring 18 can be adjusted according to the thickness of the cloth, so that the pressure of the pressure roller 11 on the cloth is adjusted to adapt to different working requirements.
[0017] When the auxiliary seat 10 moves, the upper and lower movements are realized through the cooperation of the sliding rail 13 and the sliding groove 30, and the movement space of the auxiliary seat 10 is limited and positioned through the upward and downward displacement of the positioning pin 14 in the movable groove 31.
[0018] When the pressure roller 11 works, the motor 120 drives the belt pulley to rotate, the belt pulley drives the belt pulley two 123 to rotate through the belt ring 122, and then the belt pulley two 123 drives the transmission shaft to rotate, so as to drive the pressure roller 11 to rotate, the pressure roller 11 and the driving roller part 20 rotate at the same time, the cloth is driven to move forward, and the feeding purpose is achieved.
[0019] The preferred embodiments of the utility model are described above, the protection scope of the utility model is not limited to the above-mentioned embodiments, any technical scheme belonging to the utility model idea belongs to the protection scope of the utility model. It should be noted that for ordinary technical personnel in the technical field, some improvements and decorations without departing from the principle of the utility model can also be regarded as the protection scope of the utility model.
Claims
1. An auxiliary feeding device for a blind seam sewing machine, characterized in that: The device includes an upper auxiliary wheel assembly mounted on a frame and a lower auxiliary wheel assembly mounted on a worktable. The upper auxiliary wheel assembly includes an auxiliary seat with pressure rollers and an adjustment part for adjusting the vertical displacement of the auxiliary seat. One side of the auxiliary seat is provided with a slide rail and a positioning pin. The frame is provided with a slide groove adapted to the slide rail and a movable groove for the positioning pin to pass through. The positioning pin is located in the movable groove and can move vertically. The adjustment part includes an adjustment seat fixed on the frame and an adjustment screw inserted into the adjustment seat with a threaded engagement. The bottom of the adjustment screw is rotatably engaged with a guide post. The guide post extends outside the adjustment seat and is slidably engaged inside the auxiliary seat. A spring is sleeved on the guide post, and the tail end of the spring abuts against the auxiliary seat.
2. The auxiliary feeding device for a blind seam sewing machine according to claim 1, characterized in that: The auxiliary seat is equipped with a motor, and a pulley is provided at the output end of the motor. A rotating shaft is passed through the pressure roller, and a second pulley is provided at the other end of the rotating shaft. A belt ring is provided between the first pulley and the second pulley.
3. The auxiliary feeding device for a blind seam sewing machine according to claim 2, characterized in that: The lower auxiliary wheel assembly includes a drive roller that rotates circumferentially driven by a motor, and a cylinder that drives the drive roller to move up and down.